1
Introduction
Toshiba
B
‐
FV4T
Owner’s
Manual
8
Red
Red
Cover
(Thermal
Head)
open
error.
Red
Red
The
RTC
battery
is
low.
(If
the
printer
has
a
built
‐
in
RTC)
1.4.2 System Mode
The
system
mode
consists
of
status
light
color
combinations.
It
contains
a
list
of
commands
for
you
to
select
and
run.
To
enter
the
system
mode
and
run
the
command,
do
the
following:
1.
Turn
off
the
printer.
2.
Press
and
hold
the
FEED
button,
and
turn
on
the
printer.
3.
Both
status
lights
will
light
up
solid
orange
for
a
few
seconds.
Next,
they
turn
to
green
shortly,
and
then
turn
to
other
colors.
4.
When
status
lights
show
the
color
combination
you
need,
release
the
FEED
button
immediately.
5.
Press
the
FEED
button
to
run
the
command.
The
following
table
is
the
command
list
of
the
system
mode.
LED
1
LED
2
Command
Green
Red
Transmissive
Sensor
Calibration
(
Section
3.1
)
Green
Orange
Reflective
Sensor
Calibration
(
Section
3.1
)
Red
Red
Restore
the
Printer
to
Factory
Settings
(
Section
3.3
)
Red
Orange
TPCL
Auto
Call
Cancellation
Red
Green
Disable
Checking
RTC
Battery
Charge
Orange
Red
Disable
BASIC
Mode
Orange
Green
Self
Test
and
Dump
Mode
(
Section
3.2
)
Note
For
information
about
TPCL
Auto
Call
and
BASIC
Mode,
please
refer
to
B
‐
FV4T
technical
manual.
